Adrenergic agonist
Definition
Adrenergic agonists are drugs that stimulate the adrenergic receptors of the sympathetic nervous system, mimicking the effects of adrenaline and noradrenaline. They are commonly used in cardiac emergencies to increase heart rate, contractility, and blood pressure.
5 Must Know Facts For Your Next Test
- Adrenergic agonists activate alpha and beta receptors to produce their effects.
- Common examples include epinephrine, norepinephrine, and dopamine.
- These drugs can be used to treat conditions like cardiac arrest, anaphylaxis, and severe hypotension.
- Side effects may include tachycardia, hypertension, and arrhythmias.
- They are often administered intravenously for rapid onset during emergencies.
Review Questions
- What are adrenergic agonists and how do they function in the body?
- Name three common adrenergic agonists used in cardiac emergencies.
- What are some potential side effects of using adrenergic agonists?
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Related terms
Beta-adrenergic blockers: Drugs that inhibit the action of adrenergic agonists on beta receptors, reducing heart rate and blood pressure.
Sympathetic nervous system: Part of the autonomic nervous system responsible for 'fight or flight' responses.
Vasopressors: Medications that constrict blood vessels to elevate blood pressure, often overlapping with adrenergic agonists.
